80172493619 has 2 divisors, whose sum is σ = 80172493620. Its totient is φ = 80172493618.

The previous prime is 80172493603. The next prime is 80172493633. The reversal of 80172493619 is 91639427108.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80172493619 - 2⁴ = 80172493603 is a prime.

It is a super-2 number, since 2×80172493619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80172493699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40086246809 + 40086246810.

It is an arithmetic number, because the mean of its divisors is an integer number (40086246810).

Almost surely, 2^80172493619 is an apocalyptic number.

80172493619 is a deficient number, since it is larger than the sum of its proper divisors (1).

80172493619 is an equidigital number, since it uses as much as digits as its factorization.

80172493619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 80172493619 in words is "eighty billion, one hundred seventy-two million, four hundred ninety-three thousand, six hundred nineteen".